security fix

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

security update

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2016:0079 advisory.

    The Berkeley Internet Name Domain (BIND) is an implementation of the Domain     Name System (DNS) protocols. BIND includes a DNS server (named); a resolver     library (routines for applications to use when interfacing with DNS); and     tools for verifying that the DNS server is operating correctly.

    A flaw was found in the way BIND handled requests for TKEY DNS resource     records. A remote attacker could use this flaw to make named (functioning     as an authoritative DNS server or a DNS resolver) exit unexpectedly with an     assertion failure via a specially crafted DNS request packet.
    (CVE-2015-5477)

    A denial of service flaw was found in the way BIND parsed certain malformed     DNSSEC keys. A remote attacker could use this flaw to send a specially     crafted DNS query (for example, a query requiring a response from a zone     containing a deliberately malformed key) that would cause named functioning     as a validating resolver to crash. (CVE-2015-5722)

    A denial of service flaw was found in the way BIND processed certain     records with malformed class attributes. A remote attacker could use this     flaw to send a query to request a cached record with a malformed class     attribute that would cause named functioning as an authoritative or     recursive server to crash. (CVE-2015-8000)

    Note: This issue affects authoritative servers as well as recursive     servers, however authoritative servers are at limited risk if they perform     authentication when making recursive queries to resolve addresses for     servers listed in NS RRSETs.

    Red Hat would like to thank ISC for reporting the CVE-2015-5477,     CVE-2015-5722, and CVE-2015-8000 issues. Upstream acknowledges Jonathan     Foote as the original reporter of CVE-2015-5477, and Hanno Bck as the     original reporter of CVE-2015-5722.

    All bind users are advised to upgrade to these updated packages, which     contain backported patches to correct these issues. After installing the     update, the BIND daemon (named) will be restarted automatically.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An error in the parsing of incoming responses allows some records with an incorrect class to be be accepted by BIND instead of being rejected as malformed. This can trigger a REQUIRE assertion failure when those records are subsequently cached. Intentional exploitation of this condition is possible and could be used as a denial-of-service vector against servers performing recursive queries. (CVE-2015-8000)

CVE-2015-8461 was also issued today for bind, but the Amazon Linux AMI's version of bind is not impacted by that CVE.

Updated bind97 packages that fix one security issue are now available for Red Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.

A denial of service flaw was found in the way BIND processed certain records with malformed class attributes. A remote attacker could use this flaw to send a query to request a cached record with a malformed class attribute that would cause named functioning as an authoritative or recursive server to crash. (CVE-2015-8000)

Note: This issue affects authoritative servers as well as recursive servers, however authoritative servers are at limited risk if they perform authentication when making recursive queries to resolve addresses for servers listed in NS RRSETs.

Red Hat would like to thank ISC for reporting this issue.

All bind97 users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the update, the BIND daemon (named) will be restarted automatically.

It was discovered that the BIND DNS server does not properly handle the parsing of incoming responses, allowing some records with an incorrect class to be accepted by BIND instead of being rejected as malformed. This can trigger a REQUIRE assertion failure when those records are subsequently cached. A remote attacker can exploit this flaw to cause a denial of service against servers performing recursive queries.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Oracle Linux 5 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2015-2658 advisory.

    - Fix CVE-2015-8000
    - Fix CVE-2015-5722
    - Fix CVE-2015-5477

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to its self-reported version number, the remote installation of BIND is affected by a denial of service vulnerability due to improper parsing of incorrect class attributes in db.c. An unauthenticated, remote attacker can exploit this, via a malformed class attribute, to trigger a REQUIRE assertion failure, resulting in a denial of service condition.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

This update for bind fixes the following security issue :

  - CVE-2015-8000: Fix remote denial of service by     misparsing incoming responses (bsc#958861). This update     was imported from the SUSE:SLE-12-SP1:Update update     project.

This update for bind fixes the following security issue :

  - CVE-2015-8000: Fix remote denial of service by     misparsing incoming responses (bsc#958861).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	名稱	產品	系列	已發布	已更新	嚴重性
89136	Fedora 23 : bind-9.10.3-7.P2.fc23 / bind-dyndb-ldap-8.0-4.fc23 / dnsperf-2.0.0.0-19.fc23 (2015-09bf9e06ea)	Nessus	Fedora Local Security Checks	2016/3/4	2021/1/11	high
89441	Fedora 22 : bind99-9.9.8-1.P2.fc22 / dhcp-4.3.2-6.fc22 (2015-e278e12ebc)	Nessus	Fedora Local Security Checks	2016/3/4	2021/1/11	medium
88480	RHEL 6 : bind (RHSA-2016:0079)	Nessus	Red Hat Local Security Checks	2016/1/29	2026/10/8	high
87380	Amazon Linux AMI : bind (ALAS-2015-631)	Nessus	Amazon Linux Local Security Checks	2015/12/16	2018/4/18	medium
87426	CentOS 5 : bind97 (CESA-2015:2658)	Nessus	CentOS Local Security Checks	2015/12/17	2021/1/4	medium
87427	Debian DLA-370-1 : bind9 security update	Nessus	Debian Local Security Checks	2015/12/17	2021/1/11	medium
87451	Oracle Linux 5 : bind97 (ELSA-2015-2658)	Nessus	Oracle Linux Local Security Checks	2015/12/17	2024/10/22	high
87502	ISC BIND 9.x < 9.9.8-P2 / 9.10.x < 9.10.3-P2 Response Parsing Class Attribute Handling DoS	Nessus	DNS	2015/12/18	2020/4/27	high
87625	openSUSE Security Update : bind (openSUSE-2015-950)	Nessus	SuSE Local Security Checks	2015/12/29	2021/1/19	medium
87655	SUSE SLED12 / SLES12 Security Update : bind (SUSE-SU-2015:2359-1)	Nessus	SuSE Local Security Checks	2015/12/29	2021/1/6	medium

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